有没有办法用C为i_block创建一个迭代器风格的函数？

#include <stdio.h>

typedef struct {
    int* i_block;
    int index;
    int size;
} Iterator;

Iterator* createIterator(int* i_block, int size) {
    Iterator* iterator = malloc(sizeof(Iterator));
    iterator->i_block = i_block;
    iterator->index = 0;
    iterator->size = size;
    return iterator;
}

int* next(Iterator* iterator) {
    if (iterator->index < iterator->size) {
        int* current = &(iterator->i_block[iterator->index]);
        iterator->index++;
        return current;
    }
    return NULL;
}

int hasNext(Iterator* iterator) {
    return iterator->index < iterator->size;
}

int main() {
    int i_block[] = {1, 2, 3, 4, 5};
    int size = sizeof(i_block) / sizeof(int);

    Iterator* iterator = createIterator(i_block, size);

    while (hasNext(iterator)) {
        int* current = next(iterator);
        printf("%d ", *current);
    }

    return 0;
}